<template>
  <div class="home-container">
    <el-container class="el-container-box">
      <el-header>
        <div class="header-left">
          <img src="../assets/logo.png" alt="">
          <h3>后台管理系统</h3>
        </div>
        <el-button @click="logout">退出</el-button>
      </el-header>
      <el-container>
        <el-aside :width="flag ? '60px' : '200px'">
          <div class="toggle-width" @click="flag = !flag">|||</div>
          <el-menu
            router
            :default-active="defaultActive"
            :collapse="flag"
            :collapse-transition="false"
            unique-opened
            background-color="#545c64"
            text-color="#fff"
            class="el-menu-vertical-demo">
            <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
              <template slot="title">
                <i :class="menuObj[item.id]"></i>
                <span>{{item.authName}}</span>
              </template>
              <el-menu-item @click="setDefaultActive('/' + item2.path)"  :index="'/' + item2.path" v-for="item2 in item.children" :key="item2.id">
                <i class="el-icon-menu"></i>
                <span slot="title"> {{item2.authName}}</span>
              </el-menu-item>
            </el-submenu>
          </el-menu>
        </el-aside>
        <el-main>
          <router-view></router-view>
        </el-main>
      </el-container>
    </el-container>
  </div>
</template>

<script>
export default {
  data() {
    return {
      flag: false,
      defaultActive: '',
      menuList: [],
      menuObj: {
        125: 'iconfont icon-users',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-danju',
        102: 'iconfont icon-shangpin',
        145: 'iconfont icon-baobiao'
      }
    }
  },
  created() {
    this.getMenuList()
  },
  methods: {
    logout() {
      sessionStorage.removeItem('token')
      this.$router.push('/login')
    },
    setDefaultActive(path) {
      sessionStorage.setItem('defaultActive', path)
      this.defaultActive = path
    },
    async getMenuList() {
      const {data: result} = await this.$http.get('/menus')

      this.menuList = result.data
      this.defaultActive = sessionStorage.getItem('defaultActive') || ''
    }
  }
  
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
  .el-container-box {
    height: 100%;
  }
  .el-menu-vertical-demo{
    border-right: 0;
  }
  .toggle-width{
    text-align: center;
    color: #fff;
    background-color: #545C75;
    font-size: 12px;
    letter-spacing: 0.2em;
    height: 25px;
    line-height: 25px;
    cursor: pointer;
    user-select: none;
  }
  .el-submenu__title i{
    margin-right: 10px;
  }
  .el-main{
    background-color: #fafafa;
  }
  .el-header {
    user-select: none;
    background-color: #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
    .header-left {
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #fff;
      font-size: 23px;
      img {
        width: 50px;
        height: 50px;
        margin-right: 20px;
      }
    }
  }
  .el-aside{
    background-color: #545c64;
  }
}
</style>
